Symmetrically substituted poly(diphenylacetylene)s bearing optically active 2-octyloxycarbonyl groups at the para-positions of the pendant phenyl rings not only show a unique solvent-dependent helix inversion to afford diastereomeric right- and left-handed helical polymers but also significant unprecedented solvent-dependent changes in the helix inversion barrier of the polymer backbone resulting in switching between static or dynamic behavior of the helical polymers at approximately room temperature depending on the solvents used.

中文翻译：

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光学活性聚（二苯乙炔）表现出溶剂依赖性螺旋反转并伴有螺旋反转势垒的调节


在苯环的对位上带有光学活性 2-辛氧基羰基的对称取代的聚（二苯乙炔）不仅表现出独特的溶剂依赖性螺旋反转以提供非对映体右旋和左旋螺旋聚合物，而且还具有前所未有的重要溶剂聚合物主链的螺旋反转势垒的依赖变化导致螺旋聚合物在大约室温下根据所使用的溶剂在静态或动态行为之间切换。